Hurricane lantern



Jan. 11, 1938.

HURR I CANE LANTERN FiledDec. 8. 1936 3 Sheets-Sheet 2 C) P Q m o o o m 5 I0--fi Inventor:

B. NIER 2,305,292-

Jan. 11, 1938.

B. N] ER HURRI CANE LANTERN Filed Dec. 8. 1936 3 Sheets-Sheet 3 Patented Jan. 11, 1938 STATES v a V z,105,292

HURRICANE LANTERN v Bruno Nier, Beierfeld, Germany Application December 8, 1936, Serial No. 114,873 In Germany December 12, 1935 2 Claims.

This invention relates to an improvement in hurricane lanterns and has for its object to produce a hurricane lantern which is distinguished materially and advantageously from known lanterns in that it is absolutely proof against storms and shocks.

It is known that even the best hurricane lanterns existing hitherto sometimes are extinguished by the effects of storm and by violent shock.

Investigation shows that this is due to the fact that in these circumstances the air currents which react. on the lantern cause eddies which, owing to the effect of their shock and suction, sometimes cause the flame to be extinguished.

This extinguishment also occurs even if the upper end of the outer chimney head which is connected with the lateral air tubes is provided with an overlapping ring and if at the lower end of the fixed chimney, a ring-shapedlperfo-rated screen is provided between the inner and outer wall of the chimney.

It has now been foundthat this undesirable occurrence definitely can be prevented'iflin lanterns which are made in the manner above described, the lower part of the fixed outer chimney which is connected with the lateral tubes of the hurricane lantern, is perforated above the perforated screen. 7

In this manner an absolutely storm-proof lantern is produced which is not extinguished even when it is bumped up and down violently as occurs particularly when a lantern is attached to ciated with the chimney head;

Figure 3A is a plan View of the ring shown in Figure 3;

Figure 4 is a view of the chimney head in front elevation;

Figure 5 is a sectional view of the chimney head shown in Figure 4; and

Figure 6 is a bottom plan view of the chimney head illustrated in Figure 4.

Most of the hurricane lantern structure shown in the drawings is arranged in known manner so that the whole method of construction need not be described in the present connection.

So far as this specification is concerned, only the outer or fixed chimney head I is of interest and it is on this part that an additional ring 2 is provided in accordance with the invention.

The rim 3 of the chimney head] is provided with perforations 4 and also with a closing plate or screen 5 having perforations 6. l are the outlet openings in the movable chimneyfor the combustion gases and 8 is the rim of the covering plate 9 of the hurricane lantern.

The ring 2 disperses the air eddies which occur on the impact of air currents on the outer chimney l and prevents them from entering the openings 1 which serve for deflecting the combustion gases so that these air eddies do'not reach the interior of the hurricane lantern and consequently cannot affect its perfect burning. V This arrangement alone however is not sufficient to guarantee the reliable burning of the lantern under all circumstances and this result can be achieved only if, in accordance with the invention, the lower part 3 of the fixed outer chimney, which is connected with the lateral tubes, is perforated above the perforated screen 5.

When gusts of wind strike the movable chimney it? of the lantern parts situated below it, such as the glass chimney ll, they are deflected partially and arrive as direct air currents or eddies in the interior of the lantern.

By means of the perforated screen 5 which hitherto has been used by itself, these air currents or eddies admittedly were broken up, but their shock effect on the flame, after entering the air chamber I2 from which they reached the burner chamber I4 through the lateral tubes l3, was not sufliciently reduced, so that they could still extinguish the flame, particularly when the hurricane lantern was bumped up and down, as happens frequently with lanterns on badly jolted vehicles.

These harmful air'currents or air eddies can now no longer occur if, in accordance with the invention, the conical rim 3 is provided with perforations 4 so that most of the air which suddenly enters through the perforations B escapes: through these perforations 4 and thus prevents gusts of air from reaching the flame and extinguishing it.

I claim:

l. A lantern comprising, a burner'chamber, a chimney head, means for supporting said chimney head above said burner chamber comprising tubes extending from the burner to the head to provide passages therebetween, a perforated plate carried by the lower portion of said chimney head, the lower end of said head having openings positioned above saidplate whereby air normally passes said perforated plate to the burner chamber through said tubes and sudden gusts of air escape through said openings.

2. A lantern comprising, a burner chamber, a chimney head, means for supporting said chimney head above said burner chamber comprising tubes communicating the burner chamber with the head, a conical rim carried by the lower portion of said head, said rim having openings arranged in the flaring skirt thereof whereby air normally passes through the rim to the burner chamber by means of said tubes and sudden gusts of air escape through the openings arranged in the flaring skirt of said rim.

v BRUNO NIER. 

